package com.cn.wanxi.servlet.user;

import com.alibaba.fastjson.JSONObject;
import com.cn.wanxi.model.UserModel;
import com.cn.wanxi.service.IUserService;
import com.cn.wanxi.service.impl.UserServiceImpl;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;

@WebServlet("/back/user/findById")
public class UserFindByIdServlet extends HttpServlet {
    @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        //        1.控制乱码
        req.setCharacterEncoding("UTF-8");
        resp.setCharacterEncoding("UTF-8");
//        2.拿到页面传递过来的值
        String idString = req.getParameter("id");
        int id = idString == null ? 0 : Integer.parseInt(idString);
//        3.封装到model
//        4.调用服务逻辑层
        IUserService iUserService = new UserServiceImpl();

//        5.接受逻辑层返回的数据
        UserModel userModel = iUserService.findById(id);
//        6.返回页面（给页面一个反馈）

        JSONObject jsonObject = new JSONObject();
        jsonObject.put("userModel", userModel);
        resp.getWriter().println(jsonObject);
    }
}
